41399000 ÷ 421 
We're looking to find how many times 421 goes into 41399000.

Let's proceed to step 1:
When dividing 4 by 421, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 421

Going ahead to step 2:
When dividing 41 by 421, we get 0 with a remainder of 41.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 41 and we're left with 41.
Grab the next digit (3) from the dividend, add it to 41, then carry on: 413 / 421

Step 3:
When dividing 413 by 421, we get 0 with a remainder of 413.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 413 to get 413.
Bring next digit (9) of the dividend behind the 413 and repeat the process: 4139 / 421

Step 4:
4139 divided by 421 is 9 with a remainder of 350.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 350 after subtracting 3789 from 4139.
Fetch the next digit (9) from the dividend, attach it to 350 and continue: 3509 / 421

Let's proceed to step 5:
421 goes into 3509 8 times with a remainder of 141.
The next digit of our result is 8. 
Result so far: 98.0
The remainder is 141 after subtracting 3368 from 3509.
Fetch the next digit (0) from the dividend, attach it to 141 and continue: 1410 / 421

Step 6:
1410 divided by 421 is 3 with a remainder of 147.
The next digit of our result is 3. 
Result so far: 983.0
The remainder is 147 after subtracting 1263 from 1410.
Take the next digit (0) from the dividend and append it to 147, then repeat: 1470 / 421

Advancing to step 7:
When dividing 1470 by 421, we get 3 with a remainder of 207.
The next digit of our result is 3. 
Result so far: 9833.0
If we take 1263 away from 1470, we end up with 207.
Fetch the next digit (0) from the dividend, attach it to 207 and continue: 2070 / 421

Going ahead to step 8:
The number 421 fits into 2070 4 times, leaving a remainder of 386.
The next digit of our result is 4. 
Result so far: 98334.0
Subtract 1684 from 2070 to get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Advancing to step 9:
3860 divided by 421 is 9 with a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 98334.9
If we take 3789 away from 3860, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 10:
421 goes into 710 1 times with a remainder of 289.
Record the quotient 1 as the next digit in the result. 
Result so far: 98334.91
Subtract 421 from 710 to get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Let's proceed to step 11:
2890 divided by 421 is 6 with a remainder of 364.
Put 6 as the next digit of the answer. 
Result so far: 98334.916
If we subtract 2526 from 2890, we get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Step 12:
When dividing 3640 by 421, we get 8 with a remainder of 272.
Put 8 as the next digit of the answer. 
Result so far: 98334.9168
If we take 3368 away from 3640, we end up with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 13:
421 can be fit into 2720 6 times, resulting in a remainder of 194.
Write down 6 as next digit of the result. 
Result so far: 98334.91686
Subtracting 2526 from 2720 leaves us with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Advancing to step 14:
1940 divided by 421 is 4 with a remainder of 256.
The number 4 becomes the next digit in our result. 
Result so far: 98334.916864
The remainder is 256 after subtracting 1684 from 1940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Advancing to step 15:
When dividing 2560 by 421, we get 6 with a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 98334.9168646
Deduct 2526 from 2560 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 16:
The number 421 fits into 340 0 times, leaving a remainder of 340.
Use 0 as the next digit of our solution. 
Result so far: 98334.9168646
The remainder is 340 after subtracting 0 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

After the division, we end up with 98334.9168646 and a remainder of 3.4e-07.